A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 2925-00-196-9003
NSN 5855-00-411-8688
NSN 6135-01-265-1384
NSN 5835-00-187-1481
NSN 5998-01-317-3763
NSN 5960-01-505-2426
NSN 6110-01-143-0742
NSN 6240-00-229-8183
NSN 6650-00-557-0780
NSN 5990-01-507-7495
NSN 6105-01-357-6320
NSN 6240-01-138-0112